Win 10 Reboot Loop of Death - system thread exception not handled (ClassPNP.sys)

I've read all the post and can't find an answer, so I am hoping someone can help, please!  When I turn on the machine, the first thing is the windows logo and Preparing Automatic Repair, the reboot/auto fix cycle starts as soon as I turn on the machine, so I cannot get to safe mode via msconfig or get to DMP files.  I never get to the start menu.  I cannot get to a command prompt.  The error, it tells me, is system thread exception not handled (ClassPNP.sys).

I have an HP Pavilion HPE H8-1220 with AMD FX-8100.  OS was Win 7 Home Premium, upgraded yesterday to win 10.  Upgrade was via the internet tool, so no DVD/flash.  All worked great for about an hour, then the BSOD appeared and continues to appear as soon as I turn on the machine.  I have tried all the old interrupt boot keys, but I understand Microsoft has sped up the boot sequence so these no longer work.  I tried unplugging from the power source and every other possibility I read about in the posts.  I cannot update drivers or anything else, even if I knew that was the issue.

Fortunately, I made backup DVDs of my win 7 system, files, pictures, and a recovery DVD of win 7.  Before I use it,is there any way to enter safe mode BEFORE the OS boots?  Or any other solution?  I really want win 10 to work!


Thank you for any help!!

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Answer
Answer

Hi,

Thanks for posting your query to Microsoft forum. I will certainly help you with this.

Create installation media through Download Windows 10

Reboot your computer.

Now after the restart of the operating system it will go directly to the bootable disk .

Note: it might ask you to choose if you want to boot from the specific Windows 10 media and you will need to do so.

Method 1:

  1. Insert the Windows 10 DVD/USB
  2. Left click or tap on the “Next” button situated in the lower side of the screen.
  3. Now you will need to left click or tap on the “Repair your computer” feature situated in the lower side of the screen.
  4. In the “Choose an option” window you will need to left click or tap on the “Troubleshoot” feature.
  5. In the next window you will need to left click or tap on the “Advanced options” feature.
  6. Now left click or tap on the “Command Prompt” feature.
  7. When the “Command prompt” window (black box) is in front of you write in there the following: “C:” but without the quotes.
  8. Press the “Enter” button on the keyboard.
  9. Write in the command prompt window the following command: “BCDEDIT /SET {DEFAULT} BOOTMENUPOLICY LEGACY” without the quotes.
  10. Press the “Enter” button on the keyboard.
  11. Now if you have written correctly the command above you will need to write: “Exit” without the quotes.
  12. Press the “Enter” button on the keyboard in order to exit the command prompt window.
  13. Now in the “Choose an option” window you will need to Left click or tap on the “Continue”.
  14. Reboot your Windows 10 computer.

Method 2:

  1. Restart the computer
  2. Press on the “F8” button on the keyboard continuously until you get to the “Advanced boot options” menu.
  3. In the “Advanced boot options” window you will need to move with the arrows on the keyboard and select the “Safe Mode” feature.
  4. Press the “Enter” button on the keyboard.
  5. Now that your Windows 8.1 or Windows 10 starts you will need to log on with the administrator account.
  6. Left click or tap on the “Desktop” icon in the start screen.
  7. Move the mouse cursor over to the lower right side of the screen.
  8. From the menu that appears you need to left click on the “Settings” feature.
  9. In the “Settings” menu you will need to left click or tap on the “Control Panel” icon.
  10. Now in the “Control Panel” window you need to left click or tap on “Device Manager”
  11. In the “Device Manager” menu on the left side double click (left click) on the “Display adapters” category in order to expand it.
  12. Now you will have there the graphics driver that you currently use in Windows 10 and you need to right click on it.
  13. Left click on the “Uninstall” option.
  14. Left click or tap on the “OK” button on the next window that appears in order to confirm the uninstall process.

Now after the driver is uninstalled you need to take out the Windows 10 boot media and also restart your operating system.

After the operating system powers up again follow the steps above to check if it installed the graphics driver automatically.

Note: if it wasn’t installed automatically you will need to go on the manufacturer’s website and download the latest driver for your graphics card from there (be sure that the driver is compatible with your Windows 10 device).

Install the latest driver available and reboot the system again.

Method 3: Check in compatibility mode.

Download the drivers from manufacture's website for Windows 10, if there no drivers available for Windows 10, download the latest driver from the manufacturer’s website and try installing it in compatibility mode. Compatibility mode runs the program using settings from a previous version of Windows.

Follow these steps to install the drivers in compatibility mode and check if that helps.

a. Download the driver from the manufacturer’s website.

b. Right-click on the driver setup file and click on ‘properties’.

c. Click on the ‘compatibility’ tab and check the box ‘Run this program in compatibility mode for’ and select Windows 8 operating system from the drop down menu and proceed with the installation.

d. Once this is done, restart the computer and check if the issue persists.

You may also refer: Make older programs compatible with this version of Windows (Steps applies to Windows 10)

Let us know if you need further assistance. We will be glad to help you further.

____________________

Thanks & Regards,

Isha Soni

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Last updated June 22, 2021 Views 252,489 Applies to: